Without Socialism the working class is a heterogeneous mixture of different categories, some of which have independent, varying interests, sometimes opposed to each other.

Karl Bernhardovic Radek (Russian: Карл Бернга́рдович Ра́дек) (31 October 1885 – 19 May 1939) was a Marxist active in the Polish and German social democratic movements before World War I and an international Communist leader after the Russian Revolution.